649757330 has 16 divisors (see below), whose sum is σ = 1174811904. Its totient is φ = 258736560.

The previous prime is 649757293. The next prime is 649757351. The reversal of 649757330 is 33757946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143456 + ... + 147915.

It is an arithmetic number, because the mean of its divisors is an integer number (73425744).

Almost surely, 2^649757330 is an apocalyptic number.

649757330 is a deficient number, since it is larger than the sum of its proper divisors (525054574).

649757330 is a wasteful number, since it uses less digits than its factorization.

649757330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291601.

The product of its (nonzero) digits is 476280, while the sum is 44.

The square root of 649757330 is about 25490.3379734361. The cubic root of 649757330 is about 866.1312917978.

The spelling of 649757330 in words is "six hundred forty-nine million, seven hundred fifty-seven thousand, three hundred thirty".